Question 1

Which of the following carbocations is the most stable?

Accepted Answer

A)   A
B)   B
C)   CD) B) and C)
E) A) and C)

Question 2

For the following reaction, pick out the product:

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) All of the above
G) A) and C)

Question 3

Identify suitable conditions to effect the following transformation.
2 B)  H2, Lindlar catalyst C)  H2, Pd-on-C D)  LiAlH4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   H2
B)   H2, Lindlar catalyst
C)   H2, Pd-on-C
D)   LiAlH4E) A) and B)
F) B) and C)

Question 4

What is the major product of the following reaction?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) C) and D)
G) B) and D)

Question 5

For the following reaction, pick out the product:

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) C) and D)
G) A) and B)

Question 6

From the following reaction sequence, match the reagents to each step:
 
-MeI

Accepted Answer

A)   Step 2
B)   Step 3
C)   Step 1D) B) and C)
E) A) and C)

Question 7

From the following reagents, A-E, pick out those which react with alkenes preferentially by syn-addition. Please select all that apply.
A:  HBr \mathrm{HBr} HBr 
B:  m⊂CPBA m \subset C P B A m⊂CPBA 
C:  OsO4,H2O \mathrm{OsO}_{4}, \mathrm{H}_{2} \mathrm{O} OsO4​,H2​O 
D:  H2,Pd \mathrm{H}_{2}, \mathrm{Pd} H2​,Pd -on-C
E:  BH3 \mathrm{BH}_{3} BH3​

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   E F) C) and D)
G) A) and B)

Exam 21: Alkenes and Alkynes: Electrophilic Addition and Pericyclic Reactions

For the following reaction, pick out the product:

Correct Answer
verified

From the following reaction sequence, match the reagents to each step: -MeI

Correct Answer
verified

From the following reagents, A-E, pick out those which react with alkenes preferentially by syn-addition. Please select all that apply. A: $\mathrm{HBr}$ B: $m \subset C P B A$ C: $\mathrm{OsO}_{4}, \mathrm{H}_{2} \mathrm{O}$ D: $\mathrm{H}_{2}, \mathrm{Pd}$ -on-C E: $\mathrm{BH}_{3}$

Correct Answer
verified

For the following reaction, pick out the product:

Correct Answer
verified

Identify suitable conditions to effect the following transformation.

Correct Answer
verified

Which of the following carbocations is the most stable?

Correct Answer
verified

What is the major product of the following reaction?

Correct Answer
verified

Exam 21: Alkenes and Alkynes: Electrophilic Addition and Pericyclic Reactions

For the following reaction, pick out the product:

Correct AnswerverifiedShow Answer

From the following reaction sequence, match the reagents to each step: -MeI

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

For the following reaction, pick out the product:

Correct AnswerverifiedShow Answer

Identify suitable conditions to effect the following transformation.

Correct AnswerverifiedShow Answer

Which of the following carbocations is the most stable?

Correct AnswerverifiedShow Answer

What is the major product of the following reaction?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified